You do not need any import license to bring products into the USA from China. You do need to work with a freight forwarding company that has US and China offices to manage the shipment and pay the fees involved.
I have been importing products from China on a regular basis for the past 12 years. Last year the ocean freight companies, which have a virtual monopoly, increase rates by more than 400%. A shipment that was costing $900 in 2020 is now costing use more than $4,000. Even without the Trump tax on imports from China the ocean freight costs now in place are a killer. Delivery times are now in the months so ordering the bikes tomorrow and you might have them for Christmas.
Retailers are indicating for many Shimano parts that they do not expect to have them in stock until December of 2022. And the dollar has continued to fall and so the Yen is 9% higher versus the U.S. dollar than it was last fall. Same is true for the Taiwan dollar (which will affect the price of Giant and Specialized and other bikes and bike components) and the Chinese Yuan which is up 11% over the U.S. dollar in the past year.